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全深式就地冷再生基層的施工特點(diǎn)
來(lái)源：http://www.kqj188.com/ 日期：2023-08-13 發(fā)布人：
全深式就地冷再生施工工藝主要采用就地冷再生施工設(shè)備對(duì)需要修復(fù)的破損瀝青路面進(jìn)行冷銑刨、破碎以及篩選，再按比例加入新集料、再生結(jié)合料、水泥、石灰、水等，經(jīng)過(guò)常溫?cái)嚢韬?，把這些物料鋪設(shè)至路面上，再經(jīng)突出后成型。這一施工工藝是需要一整套工序在現(xiàn)場(chǎng)有序的完成。其中全深式就地冷再生包含著瀝青材料層與非瀝青材料層。
The full depth on-site cold recycling construction process mainly uses on-site cold recycling construction equipment to perform cold milling, crushing, and screening on the damaged asphalt pavement that needs to be repaired. Then, new aggregates, recycled binders, cement, lime, water, etc. are added proportionally. After being stirred at room temperature, these materials are laid on the pavement, and then rolled to form. This construction process requires a complete set of processes to be completed in an orderly manner on site. The full depth on-site cold regeneration includes both asphalt material layer and non asphalt material layer.
瀝青路面再生技術(shù)的優(yōu)勢(shì)
Advantages of asphalt pavement regeneration technology
(1)節(jié)約成本
(1) Cost savings
在瀝青路面的大、中修中使用全深式就地冷再生基層施工工藝與傳統(tǒng)的修整瀝青路面相比，出色大的節(jié)約了修整成本。
Compared with traditional asphalt pavement repair, the use of full depth in-situ cold recycled base construction technology in large and medium maintenance of asphalt pavement greatly saves repair costs.
(2)工期縮短
(2) Shorten the construction period
在瀝青路面中使用全深式就地冷再生基層施工工藝能夠有效的縮短施工工期，盡快使得維修好的瀝青路面投入到使用中，同時(shí)也能有效的提高施工區(qū)域內(nèi)安全行車水平。這一施工工藝相比原來(lái)的施工工藝來(lái)說(shuō)更加的簡(jiǎn)便出色，同時(shí)也可以在施工過(guò)程中開放交通，保證道路的暢通，不會(huì)造成交通擁堵現(xiàn)象。
The use of full depth on-site cold recycling base construction technology in asphalt pavement can effectively shorten the construction period, quickly put the repaired asphalt pavement into use, and also effectively improve the safety driving level in the construction area. This construction process is more simple and efficient compared to the original construction process, and can also open up traffic during the construction process, ensuring smooth road flow and avoiding traffic congestion.
(3)節(jié)約資源
(3) Save resources
在全深式就地冷再生基層施工工藝中能夠有效的節(jié)約資源，促進(jìn)對(duì)環(huán)境的保護(hù)。它在施工過(guò)程中能夠?qū)⒃驹跒r青路面建設(shè)中使用過(guò)的材料進(jìn)行二次回收利用，非常是一些砂石材料，避免了再次開采這類資源，造成浪費(fèi)。在回收利用這一系列材料中也能夠避免這些材料被廢棄占用土地資源，造成環(huán)境污染。
In the construction process of fully deep on-site cold recycling base layer, it can effectively save resources and promote environmental protection. It can recycle and reuse the materials originally used in asphalt pavement construction, especially some sand and gravel materials, during the construction process, avoiding the waste of re mining such resources. In the recycling and utilization of this series of materials, it is also possible to avoid these materials being abandoned and occupying land resources, causing environmental pollution.
(4)提高路面的平整度
(4) Improve the smoothness of the road surface
在瀝青路面修復(fù)過(guò)程中采用全深式就地冷再生基層施工工藝能夠有效的保留現(xiàn)有道路的完整性結(jié)構(gòu)與凈空，同時(shí)還能夠有效的糾正路面縱斷面以及橫坡現(xiàn)象，出色大的提高了路面的平整度。
In the process of repairing asphalt pavement, the use of the full depth on-site cold recycling base construction process can effectively preserve the integrity structure and clearance of the existing road, while also effectively correcting the longitudinal and transverse slope phenomena of the road surface, greatly improving the smoothness of the road surface.
(5)冷再生基層施工工藝能夠復(fù)原
(5) The construction process of cold recycled base can be restored
冷再生基層施工工藝適用于修復(fù)大面積道路損毀，當(dāng)采用這一施工工藝進(jìn)行修復(fù)后，路面的使用性能與原先完整的路面無(wú)差別，新鋪設(shè)的路面基本符合原本的路面性能。
The cold recycled base construction process is suitable for repairing large-scale road damage. After using this construction process for repair, the performance of the road surface is no different from the original complete road surface, and the newly laid road surface basically conforms to the original road surface performance.
全深式就地冷再生施工工藝與質(zhì)量控制措施
Construction technology and quality control measures for full depth on-site cold regeneration
(1)全深式就地冷再生施工工藝原理
(1) Principle of fully deep on-site cold regeneration construction process
全深式就地冷再生施工工藝需要將瀝青路面中全部厚度的瀝青面層與預(yù)定比例匯總的下臥層統(tǒng)一進(jìn)行粉碎與攪拌結(jié)合在一起，以此來(lái)提供升級(jí)的均勻基層材料的維修技術(shù)。若舊材料中沒(méi)有足夠的力學(xué)性能與結(jié)構(gòu)強(qiáng)度承載預(yù)期中的荷載，那么就需要在其中加入新的集料，同時(shí)也需要按照一定的比例加入定量的化學(xué)穩(wěn)定劑，以此來(lái)達(dá)到預(yù)期的效果。
The full depth on-site cold recycling construction process requires the crushing and mixing of the entire thickness of the asphalt surface layer in the asphalt pavement and the predetermined proportion of the underlying layer, in order to provide upgraded and uniform base material maintenance technology. If the old material does not have sufficient mechanical properties and structural strength to carry the expected load, then new aggregates need to be added to it, and a certain proportion of chemical stabilizers need to be added to achieve the expected effect.
冷再生機(jī)租賃
Cold regeneration machine leasing
在全深式就地冷再生施工工藝操作中需要再生層的下承層完好無(wú)損，且它的厚度應(yīng)不低于10cm，同時(shí)也需要盡可能的滿足結(jié)構(gòu)層面所需的強(qiáng)度需求。在全深式就地冷再生技術(shù)中，其中厚度對(duì)于單一壓實(shí)層在使用水泥與石灰時(shí)要把厚度控制在15~25cm之間。在使用乳化瀝青以及泡沫瀝青材質(zhì)時(shí)厚度則需要控制在8~16cm之間。單層冷再生層面若厚度過(guò)厚那么在壓實(shí)該層面時(shí)就會(huì)出現(xiàn)問(wèn)題，導(dǎo)致相關(guān)器械無(wú)法壓實(shí)該層面，非常在越下方的越不易被壓實(shí)。在滿足壓實(shí)度要求的再生層中，除了應(yīng)在平均壓實(shí)度方面達(dá)到要求之外，表層5cm與底部5cm之間的密度差距應(yīng)控制在2%以內(nèi)。當(dāng)然在施工過(guò)程中也可以選擇雙層再生，這就需要把存有一定厚度的表層材料進(jìn)行銑刨，然后再對(duì)下面的路面進(jìn)行就地冷再生，接著將銑刨的表層材料進(jìn)行攪拌結(jié)合再進(jìn)行鋪設(shè)。雙層再生層面鋪設(shè)不受之前所描述的厚度的限制。
In the process of full depth on-site cold regeneration construction, it is necessary to ensure that the lower bearing layer of the regeneration layer is intact and undamaged, and its thickness should not be less than 10cm. At the same time, it is also necessary to meet the strength requirements of the structural layer as much as possible. In the full depth in-situ cold regeneration technology, the thickness of a single compacted layer should be controlled between 15-25cm when using cement and lime. When emulsified asphalt and foam asphalt materials are used, the thickness should be controlled within 8~16cm. If the thickness of the single-layer cold regeneration layer is too thick, there will be problems when compacting the layer, causing the relevant equipment to be unable to compact the layer, especially the lower layer, which is less likely to be compacted. In the recycled layer that meets the compaction requirements, in addition to meeting the average compaction requirements, the density difference between the surface 5cm and the bottom 5cm should be controlled within 2%. Of course, double-layer regeneration can also be chosen during the construction process, which requires milling the surface material with a certain thickness, then conducting on-site cold regeneration on the underlying road surface, and then mixing and fusing the milled surface material before laying. The double layer recycled layer laying is not limited by the thickness previously described.
(2)全深式就地冷再生施工中所使用的機(jī)械設(shè)施設(shè)備
(2) Mechanical facilities and equipment used in full depth on-site cold regeneration construction
在運(yùn)用全深式就地冷再生施工工藝時(shí)不需要使用大型機(jī)械設(shè)備，主要使用的機(jī)械設(shè)備包含再生設(shè)備、穩(wěn)定劑添加設(shè)備、平地機(jī)以及壓路機(jī)。
When using the full depth on-site cold regeneration construction process, there is no need to use large mechanical equipment. The main mechanical equipment used includes regeneration equipment, stabilizer adding equipment, graders, and rollers.
冷再生機(jī)租賃主要的功能就在于粉碎與回收材料，它在全深式就地冷再生施工工藝操作中占據(jù)著主要的位置。冷再生機(jī)租賃可以粉碎、攪拌30cm厚度的瀝青路面及下臥層材料。在冷再生機(jī)設(shè)備中的滾筒中應(yīng)該裝置可以進(jìn)行替換的碳化鎢齒刀具，同時(shí)還應(yīng)裝有人力操作與自動(dòng)操作的裝置，另外這一設(shè)備也應(yīng)可以有效的調(diào)節(jié)滾筒轉(zhuǎn)動(dòng)速度，以此來(lái)適應(yīng)不同厚度材質(zhì)的粉碎與攪拌。
The main function of cold recycling machine leasing is to crush and recycle materials, which occupies a major position in the operation of the full depth on-site cold recycling construction process. The cold recycling machine rental can crush and mix asphalt pavement and underlying layer materials with a thickness of 30cm. In the cold regeneration equipment, tungsten carbide toothed cutting tools that can be replaced should be installed in the drum, and manual and automatic operation devices should also be installed. In addition, this equipment should be able to effectively adjust the rotation speed of the drum to adapt to the crushing and mixing of materials with different thicknesses.
另外再生材料中若含水量沒(méi)有達(dá)到既定標(biāo)準(zhǔn)那么就需要讓其在通過(guò)干燥的過(guò)程中達(dá)到既定含水量標(biāo)準(zhǔn)，另外若再生材料過(guò)干，那么也需要補(bǔ)足水分。冷再生機(jī)就可以配備相應(yīng)的水噴頭對(duì)再生材料添加水分，在對(duì)再生材料粉碎以及攪拌的過(guò)程中也可以進(jìn)行水分的添加，同時(shí)在這時(shí)添加水分也能更好的進(jìn)行估計(jì)。
In addition, if the moisture content of recycled materials does not meet the established standards, it is necessary to make them meet the established moisture content standards during the drying process. In addition, if the recycled materials are too dry, it is also necessary to replenish the moisture. The cold regeneration machine can be equipped with corresponding water nozzles to add water to the recycled material. During the process of crushing and stirring the recycled material, water can also be added, and adding water at this time can also better estimate.
當(dāng)在再生材料中添加穩(wěn)定劑時(shí)，若添加的穩(wěn)定劑為粉狀物，那么就需要定量攤鋪撒料。干粉穩(wěn)定劑可以在粉碎瀝青層路面時(shí)加入也可以在冷再生機(jī)攪拌再生材料之前加入。不夠粉狀物的穩(wěn)定劑會(huì)受到天氣因素的影響，另外在定量攤鋪撒料操作中也易于產(chǎn)生塵霧，對(duì)施工操作人員和環(huán)境有著出色大的影響。當(dāng)穩(wěn)定劑為液體狀態(tài)加入到冷再生機(jī)中時(shí)，需要隨帶的計(jì)算機(jī)液體添加系統(tǒng)對(duì)各個(gè)液體添加量進(jìn)行合理計(jì)算，同時(shí)也需要有一個(gè)與冷再生機(jī)前進(jìn)速度相關(guān)的正互鎖系統(tǒng)，從而使得液體穩(wěn)定劑的添加量跟隨著冷再生機(jī)運(yùn)行的變化而發(fā)生變化。
When adding stabilizers to recycled materials, if the added stabilizers are in powder form, then a quantitative spreading of the material is required. Dry powder stabilizer can be added during the crushing of asphalt layer pavement or before the cold recycling machine mixes the recycled material. Insufficient stabilizer for powdery materials can be affected by weather factors, and in addition, it is prone to generate dust and mist during quantitative paving and spreading operations, which has a great impact on construction operators and the environment. When the stabilizer is added to the cold regeneration machine in a liquid state, the accompanying computer liquid addition system needs to accurately calculate the amount of each liquid added, and there is also a positive interlock system related to the forward speed of the cold regeneration machine, so that the amount of liquid stabilizer added changes with the operation of the cold regeneration machine.
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